<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>标签学习</title>
  <link rel="stylesheet" href="./index.css">
</head>
<body>
<div class="div1" id="div1">我是div1</div>
<div>我是div2</div>
<h1>h1</h1>
<h2>h2</h2>
<h3>h3</h3>
<h6>h6</h6>
<ul>
  <li>li1</li>
  <li>li2</li>
  <li>li3</li>
</ul>
</body>
</html>
